Here are links to all released packages from the beginning of the project. The most recent is always on top, and obviosly it's the better one. If you want to help the project submitting bugs, please choose only the current release.
Sources includes two usplash-theme-ubuntu.c , the default one is for i386/PPC version, the other one is for amd64 bugging-version
ReadMe is present only from version beta 4. If you need help about installing previous version, please go to the page of documentation in our sourceforge space. Documentation is provided only in english language, but i'll try to translate at least to italian/spanish/french and german as soon as i can.